Posted 2013-06-07 9:22 AM (#152530) Subject: Strange short between '13 Ford and stock trailer
Extreme Veteran
Posts: 402 Location: Valentine, NE
Have an new '13 Ford. When hooked to our stock trailer, the lights work fine until you apply the brakes. Lights than go off until you let off the brakes--doesn't matter if you hit the factory brake controller or not. Brakes work fine.
Have run all the wires, hooked trailer to another vehicle, hooked the '13 to another trailer and they all work fine....Has to be in the plug is my thought but have lubed, spread prongs, removed, reattached wires, etc but no luck.
Posted 2013-06-07 10:33 AM (#152537 - in reply to #152534) Subject: RE: Strange short between '13 Ford and stock trailer
Expert
Posts: 3853 Location: Vermont
There's another possibility. Assume the trailer ground is completely open. With running lights only, there's a current path through the trailer running lamp, trailer stop lamp, truck stop lamp. With brakes only, there's a current path through trailer brake lamp, trailer running lamp, truck stop lamp. With both, there's no path back through the truck because everything is at 12 V.
Strange short between '13 Ford and stock trailer
